JIC Fittings

JIC Fittings

What are JIC Fittings?

Fluid power systems frequently need fittings that can tolerate high temperatures and get reassembled quickly. JIC Fittings or Joint Industry Council connections adhere to standards set by the Society of Automotive Engineers (SAE). They are compression fitting with a 37-degree flare seat for both male and female components. They use parallel threads.

JIC hydraulic fittings use a mechanical connection for sealing, bringing together the male flared end and the female cone. Like a typical compression fitting, they comprise the body, a nut, and a ferrule or sleeve. JIC fitting use different materials, but brass, nickel alloys, and stainless steel are the most common.

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Is JIC a compression fitting?

Yes, JIC is essentially a compression fitting. It has the standard components: the body, a nut, and a ferrule. The highlight of JIC compression fittings is a 37-degree flare seat for both the male and female ends. They build metal-to-metal contact without using O-rings. Additionally, they use parallel threads.

JIC hose fittings create a seal by establishing contact between the male flared end and the female cone. In JIC connections, the sleeve creates the seal between the fitting body and the tube. It ensures that the compression is uniform during the installation. It is a metal-to-metal connection and is very sturdy and reliable.

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For what are JIC fittings used?

These fittings get preferred in high-temperature applications. Since high pressure JIC fitting offer quick disassembly and reassembly, you will find them in environments that often swap out fluids. For instance, fluid power systems and fuel delivery applications often employ JIC fitting. Their most common applications are in the military, plumbing, and aerospace sectors.

JIC connectors frequently connect control valves in hydraulic installations. They are also the preferred choice by many commercial airline manufacturers for ground equipment and fluid systems.

Since these fittings bring versatility and flexibility into the system, you will see them in swivels. Hoses that experience bending and stress employ these connections.

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Do JIC fittings need sealant?

JIC works on a principle similar to a standard compression fitting, using a nut and a ferrule for a tight connection. JIC adapter fittings are robust metal-to-metal connections. However, the best part is that these fitting do not need thread sealant. You can establish a long-lasting seal without leakage. But you don’t have to rely on adhesive to accomplish it.

JIC fittings rely on a sleeve to build a robust connection between the body and the tube. It is why they also don’t need an O ring. When you use these fittings in hydraulic systems, you can get assured of long service life and less downtime because of leakage.

High pressure JIC fittings for transferring fluid in hydraulic system, check JIC fitting size chart and weight

Do JIC fittings need O rings?

Many hydraulic applications use these fittings for creating leak-tight connections. A JIC bulkhead fitting gets machined with straight threads and has a 37° flare seat. It gets used to create the seal. So, these fitting do not require an O ring. They also don’t need tapered threads.

The flexibility offered by these fittings helps them adapt to different temperatures and pressures. Fittings that employ O rings get affected by temperature as these rings get built with an elastomer material like rubber. JIC fittings can tolerate a broad range of temperatures because of their unique sealing mechanism.

JIC or Japanese Industrial Standard refers to guidelines for threads on hydraulic fittings. These fittings have 37-degree flared tube connectors for male and female components and parallel JIC thread. The seal gets built by joining the cone to the seat. JIC standards enjoy wide application in North America and other geographical regions.

JIC compression fittings in UN/UNF, BSP, NPT or Metric type

What is the difference between JIC and JIS?

But JIS has a 30-degree flare tube and uses BSPP threading. The seal gets established via metal-to-metal contact or an O ring. Many Japanese and Korean manufacturers use these standards for high-quality equipment.

These two standards are not interchangeable as their tubing systems are different. But both get widely applied across industrial sectors.

What is JIC to npt adapter?

Hydraulic adapters connect hoses and pipes to different components in the system, like valves, cylinders, etc. A JIC adapter joins the hydraulic pump to hoses of various standards, in this case, JIC and NPT (National Pipe Tapered threads). NPT refers to the US standard for measuring tapered threads. These adapters get manufactured in low, medium, and high-pressure configurations. While stainless steel is ubiquitous, other options also exist.

It is common for the components of a hydraulic installation to follow multiple standards. You will need these adapters for compatibility and to manage the fluid flow.

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